i only had one issue with the UI:In technology view i kept on clicking on the ship icon in the background when trying to close the technology view.Maybe blackout the background even more (2-3 times as much) or invert the colors of the ship icon (white ship on black background) when in technology view?!

you might also consider switching the 'do action' and 'cancel' buttons on action dialogs (land, probe, ...), so that i can reach the 99%-choice 'do action' easier with my right thumb. E.g. i mostly mine/probe for 7 so i use my right thumb two times on the plus-button. but the button underneath is cancel and not mine/probe, which is closer to the left thumb.

the image (and description in my first post) is wrong. it wasn't the which-technologies-exist-view and the ship-icon. It was the which-technology-do-you-want-to-build and the left arrow icon:Which is the same point that is made in the '9 Suggestions'-post. Click <here> to go there.